(B) The set of lines which are parallel to the $x$-axis is an infinite set.This is because for every real number $c$,the line $y = c$ is parallel to t

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(B) The set of lines which are parallel to the $x$-axis is an infinite set.This is because for every real number $c$,the line $y = c$ is parallel to the $x$-axis.Since there are infinitely many real numbers $c$,there are infinitely many such lines.

Class 11 Mathematics Sets Basic of Set theory

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State whether the following set is finite or infinite:
The set of lines which are parallel to the $x$-axis.

A
Finite
B
Infinite
C
Empty set
D
None of these

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Basic of Set theory

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State whether the following set is finite or infinite:The set of lines which are parallel to the $x$-axis.

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Let $A = \{1, 2, 3, 4, 5, 6\}$. Insert the appropriate symbol $\in$ or $\notin$ in the blank space:$2 \dots A$

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State whether the following set is finite or infinite:
The set of lines which are parallel to the $x$-axis.

Let $A = \{1, 2, 3, 4, 5, 6\}$. Insert the appropriate symbol $\in$ or $\notin$ in the blank space:
$2 \dots A$